Harbin Hot Springs is "simply a beautiful place to be -- over 5000 acres of privacy, surrounded by many more acres of undeveloped woodland. Guests travel from around the world to experience the healing waters, historic grounds, natural setting, lively community, and our spirit-centered focus. Our location just north of the Napa Valley is consistently rated as having the cleanest air in California.The historic communal soaking pools let you enjoy spring waters as they come from Mother Earth -- very hot, soothingly warm, or breathtakingly cold. Clothing is optional here, so you may enjoy sunning, soaking and swimming with or without swimwear."